The proposed project builds on a prior NIAAA-funded project which used intensive community-based participatory research (CBPR) methods to adapt CHOICES, an evidence-based brief alcohol-exposed pregnancy (AEP) prevention intervention supported by the CDC, to American Indian Youth CHOICES (AIY-C). AIY-C contains features that make it highly amenable to mHealth approaches, including a framework for integrating diverse cultural teachings, few modules of short duration, and concrete opportunities for goal-setting and achievement. Innovative for this population is the plan to recruit young AIAN women from major urban areas in the US through social mediaand to deliver AIY-C via mobile devices, increasingly ubiquitous among AIAN young adults. While social media recruitment and mHealth interventions are not new, only very recently have they been used with AIAN populations. The investigators will partner with urban AIAN organizations to guide us through social media recruitment strategies, mHealth intervention translation and implementation, and evaluation in urban AIAN settings. The investigators propose 3 specific aims: (1) Develop and pilot social-media-based recruitment strategies for urban AIAN young women; (2) translate AIY-C for mHealth delivery through an iterative and theoretically driven process and pilot the developed translated mHealth AIY-C intervention; and (3) recruit 700 (final N=525) urban AIAN young women using identified social media strategies, and conduct an RCT to rigorously evaluate the effectiveness of the mHealth translation of AIY-C for preventing AEP and FASD.